Sutton,
SM1
CASE STUDY
Level 3+ Survey Case Study
Property In Sutton SM1. Defective Roof Exposed By Drone Imagery.
Our Level 3+ Building Survey and drone inspection revealed extensive roof defects that were not visible from ground level, helping the buyer renegotiate the price and avoid significant future costs.
Survey Date
April 2024
Property Type
Semi-detached house
Drone Inspection
“
The drone imagery revealed serious roof defects that would have otherwise gone completely unnoticed.
— Homebuyer, Sutton SM1
£24,500
Price reduction achieved
Major defects uncovered
Before legal completion
Drone technology used
Roof inspected safely
Complete clarity and confidence
Before exchange
Overview
The property is a traditional semi-detached house with a pitched tile roof. From the ground, the roof appeared to be in reasonable condition.
As part of our Level 3+ Survey, drone technology was used to conduct a detailed aerial inspection. This revealed significant defects that could not be seen from ground level.
Key findings
- Multiple slipped and missing roof tiles across key elevations.
- Ridge tiles were loose with failed mortar bedding.
- Valleys showed open joints and signs of water ingress.
- Deteriorated lead flashing around the chimney and roof junctions.
- Early signs of water penetration to the loft structure.
Outcome
Armed with the findings and drone evidence, the buyer successfully renegotiated the price by £24,500 to cover the cost of the necessary roof repairs.
Without the drone inspection, these defects would likely have remained hidden until costly damage occurred.
Full findings
Slipped and missing tiles
Numerous slipped and missing tiles across the main roof slopes.
Loose ridge tiles
Ridge tiles were loose with inadequate or deteriorated mortar.
Open valleys
Valleys showed open joints and accumulated debris.
Failed lead flashing
Lead flashing around the chimney and junctions is deteriorated.
Signs of water ingress
Evidence of historic water ingress to the loft structure.
“
We're very glad we chose the Level 3+ survey. The drone photos clearly showed issues we would never have seen. It saved us thousands.
— Homebuyer, Sutton SM1
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